Auxiliary work-holder for edging-machines.



V. BOYLE.

AUXILIARY WORK HOLDER FOR EDGING MACHINES.

APPLICATION FILED APR. 30. H5.

1 ,230, 927. Patented June 26, 191 7.

UNITED STATES PATENT OFFICE.

vnrtivoii BOYLE, or I A'rER'soii, JERSEY.

AU -mum? WORK-HGLDER FOR EDGING-MACHINE'S,

To all whom it may] 0mm; V I l 1 Be it known that I, VERNON Rona, acitizen of the United States, and resident of Paterson, in the county ofPass aic and State of New Jersey, have invent new and useful Improvementin Auxiliary \Vork-I'Iolders for Edging-Machines, of which the followingis a specification. 7,

My invention relates to a work holder and more particularly to a workholder used as an auxiliary to the main work holder of a plate or blockedging or trimming machine for preparing printers plates or blocks forthe press. I have illustrated it in connection with the edging machinewhich forms the subject-matter of my pending application Serial No.25,063, filed April 30, 1915.

In the accompanying drawings,

Figure 1 is a top plan view of a portion of an edging machine showingthe auxiliary holder in the position which it assumes when in use.

Fig. 2 is an enlarged front elevation of the holder.

Fig. 3 is an end view of the same.

Fig. 4 is a horizontal section taken in the plane of the line AA of Fig.2.

Fig. 5 is a vertical section in the plane of the line B-B of Fig. 2, and

Fig. 6 is a vertical section in the plane of the line CC of Fig. 2.

The sliding table of the edger is denoted by 1; this with the workholding clamps, such as shown in my pending application above referredto and denoted in said application by 3 and 4, forms the main Workholder. The gage mounted on the table to slide at right angles to themovement of the table is denoted by 2; the gage fence pivoted to swingdown onto the table and up and back from the table, by 3; and thecutter, of any well known or approved form, by 4.

In the present instance the same dovetail headed bolts, here representedby 5 and 6, described in my pending application above referred to, forholding the extension pieces in position on the working edge of thefence 3, are employed to secure the auxiliary workholder in position,this auxiliary workholder being employed when it is required to holdthin plates in position to be faced.

The body of this auxiliary work-holder, denoted by 7 is of a generaloblong shape and of skeleton structure, its back being provided with ashallow tongue 8 to enter steamer. of Letterslatent.

Patented June 2e, 191a.

lippiiaii ii fiia April 30, 1915. Serial No. 25,062.

the neck of dovetail slotin the working face;- of the fence3.openings-and lQ extend from the backjof the body I, through to openspaces in thebody to receiy'e the bolts 5 and 6, the latterfbei'ngprovided with huts 11 and 12 and with springs 13, 14, to holdthe body'r" yieldinglytothe fence while being slid into the desired adjustmentand 'to'clamp it in working position, all as explained in my pendingapplication above referred to in reference to extension pieces.

The front of the body 7 is provided with an undercut groove 15 for thereception of a sliding bar 16, the latter having tongues or ribs 17, 18,for guiding it. The outer face of the bar 16 has a clamping jaw 19, inthe form of a thin plate, secured thereto, and the inner face of the baris provided with a series of spiral teeth 20. A spiral toothed drivingpinion 21 is fixed to rotate with a short shaft 22, the teeth of thepinion 21 being engaged with the teeth 20 on the bar 16. The shaft 22 ismounted in suitable bearings in a space 23 in the body 7, and hasthereon a worm or screw 24 engaged by a spiral toothed pinion 25 on anupright shaft 26 hung in a boss 27 projecting upwardly from the body 7.A hand wheel 28 locked to the shaft 26, serves to rotate the shaft andthrough the interconnecting gear, slide the bar 16.

A second clamping jaw or abutment, 29 is fixed to the outer end of apost 30, seated in a shouldered socket 31 extending through the body 7from front to back. The rear portion of the post 30 is screw-threadedand a nut 32 engaged with the said threaded portion is held againsttravel in a slot 33 in the body 7. By turning the nut 32, the post 30and aw 29 thereon are adjusted outward and inward to engage the plate 34to be operated on as near the path of the cutter as may be safely doneand hence hold the Work firmly while the cutter is operating on it. Itwill be noted that the adjusted thereto and provided with a work holdingjaw, means for sliding the said jaw relative to the body of theauxiliary holder, an abutment on said auxiliary work holder and meansfor adjusting the abutment out and in transversely to the slidingmovement of the jaw into position opposite the end of said jaw.

2. An auxiliary work-holder comprising a sliding jaw, spiral gear foroperating the jaw, an abutment, means for adjusting the abutmentlaterally with respect to the path of the sliding jaw and means fordetachably securing the work-holder to a gage.

3. An. auxiliary work-holder comprising a body, a toothed bar carrying aclamping jaw, gear for operating the jaw, a traveling abutment postprovided with a screw threaded portion and a nut engaged with saidscrew-threaded portion and held against a bodily traveling movement in arecess in the body.

In testimony, that I claim the foregoing as my invention, I have signedmy name, in presence of two witnesses, this twenty-first day of April,1915; V

. VERNON BOYLE. Witnesses:

F. J, BRADLEY, W. B. MURPHY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. C.

